Michael, DG0OPK has been doing a lot of experimenting with running Gqrx on various ARM boards. In this video below, he shows gqrx running on the latest Odroid C2 from Hardkernel, which has a 64 bit, 2 GHz quad-core processor.

Today it was brought to my attention that gqrx works well with the Red Pitaya board running the SDR transceiver code by Pavel Demin. Indeed, looking through the gr-osmosdr commit logs, I could see support was added in December 2015, just around the same time I was packaging gr-osmosdr.

Meteor scatter, or meteor burst communications, is a challenging field within amateur radio communication, where the operators use the ionized trails of meteors for reflection of radio waves.

George Smart, M1GEO, has posted a very nice write-up on his website describing the setup that he uses for meteor scatter reception. The setup uses an RTL-SDR dongle with Gqrx as receiver, and WSJT or MSHV for decoding.

Are you interested in receiving and decoding telemetry from amateur radio satellites? Then check out this excellent article by Jan PE0SAT called Unix TLM (Telemetry) decoding, where Jan gives a description of his setup.

In his Linux setup, Jan uses Gqrx as SDR front-end and Gpredict to track the satellites. As we wrote earlier, Gqrx has a Hamlib-compatible TCP interface so that we can use Gpredict to adjust the receiver frequency with Doppler corrections.

PE0SAT Linux telemetry receiver setup. Image credit: PE0SAT.

Jan also takes advantage of the Audio/UDP interface in Gqrx as well as the audio routing capabilities of modern Linux desktops to route the demodulated audio from Gqrx to external decoder applications.

All in all, this is a very nice setup that demonstrates well how Gqrx can be hooked up with external applications to get new functionality.